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Home >> Toyota >> 2022 >> Corolla XLE >> Repair and Diagnosis >> External Pages >> Different car >> Section 444 (Can Communication System (Except HEV) (Early 2023, Except TMC) - Circuit Tests (1 Of 2) & Diagnostic Codes) >> CAN COMMUNICATION SYSTEM (for Gasoline Model except TMC Made) >> Air Conditioning Amplifier Communication Stop Mode [09/2022 - 11/2022] >> Description

Air Conditioning Amplifier Communication Stop Mode [09/2022 - 11/2022]: Description

WARNING: This page is about a different car, the 2023 Toyota GR Corolla and 2023 Toyota Corolla. However, it is still accessible from the selected car via links, so may be relevant.
Detection Item Symptom Trouble Area
Air Conditioning Amplifier Communication Stop Mode Any of the following conditions are met:
  • Communication stop for "Air Conditioning Amplifier" is indicated on the "Communication Bus Check" screen of the Techstream.

    Refer to PROBLEM SYMPTOMS TABLE [09/2022 - 11/2022]

  • Communication stop history for "Air Conditioning Amplifier" is indicated on the "Communication Bus Check (Detail)" screen of the Techstream. (The Lost Communication Time value for "Air Conditioning Amplifier" is 6 or more.)

    Refer to PROBLEM SYMPTOMS TABLE [09/2022 - 11/2022]

  • Communication system DTCs (DTCs that start with U) that correspond to "Air Conditioning Amplifier Communication Stop Mode" in "DTC Combination Table" are output.

    Refer to DTC COMBINATION TABLE [09/2022 - 11/2022]
  • Air conditioning amplifier assembly branch line or connector
  • Power source circuit of air conditioning amplifier assembly
  • Air conditioning amplifier assembly ground circuit
  • Air conditioning amplifier assembly
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